wat is d difference between stereospecific and stereoselective type of rxns????please give an example also..

4 years ago


Answers : (1)


Dear unnati

Stereospecific Reaction: One in which one or more reactants or catalysts cause a reaction to take place at specific conformational sites, thus leading to a preferred spatial geometry of the reaction product. Syndiotactic polymers are a result of stereospecific polymerization

For example, the addition of dibromocarbene to cis-2-butene yields cis-2,3-dimethyl-1,1-dibromocyclopropane whereas addition of dibromocarbene to the trans isomer exclusively yields the trans cyclopropane.

stereospecific carbene reaction

Stereoselective Reaction:stereoselectivity is the property of a chemical reaction in which a single reactant forms an unequal mixture of stereoisomers during the non-stereospecific creation of a new stereocenter or during the non-stereospecific transformation of a pre-existing one

An example of modest stereoselectivity is the dehydrohalogenationof 2-iodo-butane which yields 60% trans-2-butene and 20% cis-2-butene. Since alkene geometric isomers are also classified as diastereomers, this reaction would also be called diastereoselective.

Stereoselective dehalogenation

All the best


Please feel free to post as many doubts on our discussion forum as you can. We are all IITians and here to help you in your IIT JEE preparation.

Now you can win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.

4 years ago

Post Your Answer

More Questions On Discuss with colleagues and IITians

Ask Experts

Have any Question? Ask Experts
Post Question
Answer ‘n’ Earn
Attractive Gift
To Win!!!
Click Here for details
Computer science has better future scope.
Sher Mohammad 3 months ago
can you please suggest me whether to go for Metallurgical Engineering in Varanasi or join in Mech or ECE or EEE in NIT, Trichy or Suratkal in Karnataka or calicut. I am from Tamil Nadu.
Dear student, I would like to suggest that you join Mech or ECE in NIT as that will help you in future. Metallurgical has a very limited scope and unless you are willing to change your field...
Sumit Majumdar 3 months ago
Hello Student, I think you should go for ECE or EEE or Mech because they are better branches. Thanks & Regards Arun Kumar Btech, IIT Delhi Askiitians Faculty
Arun Kumar 3 months ago
how score above 100 in mathematics in jee advanced
There is no definite way to to get a particular number of marks.But there are methods through which you can gradually achieve a level of comfort which would be sufficient for you to get 100...
Aziz Alam 3 months ago
Sir which book is better Aiims explorer mtg or arihant ? do reply soon
No doubt you should prefer, Arihant books for PMT,...
Saurabh Kumar 21 days ago
sir,if i score around 180 in jee main..and 93-95% in cbse board then what wiill be my expected rank in jee MAIN...??
and sir, i am general category...
soham mondal 2 months ago
bhai, achua milna muskil hai
Aman Bhambra 17 days ago
what is state management in web application?why it is required ? give me list of state managemenet objects?
View state, control state, hidden fields, cookies, and query strings all involve storing data on the client in various ways. However, application state, session state, and profile properties...
Kevin Nash 5 years ago
A new instance of the Web page class is created each time the page is posted to the server. In traditional Web programming, this would typically mean that all information associated with the...
Jitender Pal 5 years ago
View all Questions »